Pollination genetics of hybridization in sympatric populations of Asclepias exaltata and A. syriaca (Asclepiadaceae)

American Journal of Botany

Volumn 83, Issue 12, 1996, Pages 1580-1584

  Broyles, Steven B ^a   Vail, Christopher ^a   Sherman Broyles, Susan L ^a  

^a STATE UNIVERSITY OF NEW YORK   (United States)

Author keywords

Asclepiadaceae; Asclepias; hybridization; pollination; reproductive isolation

Indexed keywords

APOCYNACEAE; ASCLEPIAS EXALTATA; ASCLEPIAS SYRIACA;

EID: 0030479272     PISSN: 00029122     EISSN: None     Source Type: Journal    
DOI: 10.2307/2445834     Document Type: Article

References (30)

1. ANDERSON, E 1949. Introgressive hybridization. Wiley, New York, NY.
2. ARNOLD, M. L., B. D. BENNETT, AND E. A. ZIMMER. 1990. Natural hybridization between Iris fulva and I hexagona. pattern of ribosomal DNA variation. Evolution 44: 1512-152.
3. _, J. L. HAMRICK, AND B. D. BENNETT. 1990. Allozyme variation in Louisiana irises: a test for introgression and hybrid speciation. Heredity 65:297-306
4. _, _, AND _. 1993. Interspecific pollen competition and reproductive isolation in Iris. Journal of Herdity 84: 13-16.
5. BOOKMAN, S. S. 1983. Costs and benefits of flower abscission and fruit abortion in Asclepias speciosa. Ecology 64:264-273.
6. _. 1984. Evidence for selective fruit production in Asclepias. Evolution 38:72-86.
7. BROYLES, S. B., AND R. WYATT. 1990. Paternity analysis in a natural population of Asclepias exaltata: multiple paternity, functional gender, and the pollen donation hypothesis. Evolution 44:1454-1468.
8. _, AND _. 1993. Allozyme diversity and genetic structure in southern Appalachian populations of Asclepias exaltata. Systematic Botany 18: 18-30.
9. _, A. SCHNABEL, AND R. WYATT. 1994. Evidence for long-distance pollen dispersal in milkweeds. Evolution 48: 1032-1040.
10. CARNEY, S. E., M. B. CRUZAN, AND M. L. ARNOLD. 1994. Reproductive interactions between hybridizing irises. analyses of pollen-tube growth and fertilization success. American Journal of Botany 81: 1169-1175.
11. GOLD, J. J., AND J. S. SHORE. 1995. Multiple paternity in Asclepias syriaca using a paired-fruit analysis. Canadian Journal of Botany 73: 1212-1216.
12. GRANT, V. 1949. Pollination systems as isolating mechanisms in angiosperms. Evolution 3: 82-97.
13. KEPHART, S. R. 1981. Breeding systems in Asclepias incarnata L., A. syriaca L., and A. verticillata L. American Journal of Botany 68: 226-232.
14. _. 1983. The partitioning of pollinators among three species of Asclepias. Ecology 64: 120-133.
15. _, AND C. B. HEISER. 1980. Reproductive isolation in Asclepias: lock and key hypothesis revisited. Evolution 34: 738-746.
16. _, R. WYATT, AND D. PARRELLA. 1988. Hybridization in Asclepias. I. Morphological evidence. Systematic Botany 13: 456-473.
17. LEVIN, D. A 1978. The origin of isolating mechanisms in flowering plants. Evolutionary Biology 11: 185-317.
18. MACIOR, L. W. 1965. Insect adaptation and behavior in Asclepias pollination. Bulletin of the Torrey Botanical Club 92: 114-126.
19. RIESEBERG, L. H., R. CARTER, AND S. ZONA. 1990. Molecular tests of the hypothesized hybrid origin of two diploid Helianthus species (Asteraceae) Evolution 44: 1498-1511.
20. _, AND J. F. WENDEL. 1994. Introgression and its consequences in plants. In R. G. Harrison and W. S. Moore [eds.], Hybrid zones and the evolutionary process, 70-109 Oxford University Press, Oxford, UK.
21. _, A. M. DESROUCHERS, AND S. J. YOUN. 1995. Interspecific pollen competition as a reproductive barrier between sympatric species of Helianthus (Asteraceae). American Journal of Botany 82: 515-519.
22. SAGE, T. L., S. B. BROYLES, AND R. WYATT. 1990. The relationship between the five stigmatic chambers and two ovaries of milkweed (Asclepias amplexicaulis Sm.) flowers: a three-dimensional assessment. Israel Journal of Botany 39: 187-196.
23. SHANNON, T. R., AND R. WYATT. 1986. Reproductive biology of Asclepias exaltata. American Journal of Botany 73: 11-20.
24. SHORE, J. S. 1993. Pollination genetics of the common milkweed, Asclepias syriaca L. Heredity 70: 101-108.
25. SOKAL, R. R., AND F. J. ROHLF. 1995. Biometry: the principles and practices of statistics in biological research. W. H. Freeman, New York, NY.
26. STEBBINS, G. L. 1974. Flowering plants: evolution above the species level. Harvard University Press, Boston, Massachusetts, USA.
27. WILLSON, M. F., AND R. I. BERTIN. 1979. Flower-visitors, nectar production, and inflorescence size of Asclepias syriaca. Canadian Journal of Botany 57: 1380-1388.
28. WOODSON, R. E. 1954. The North American species of Asclepias L. Annals of the Missouri Botanical Garden 41: 1-211.
29. WYATT, R., AND S. B. BROYLES. 1992. Hybridization in North American Asclepias. III. Isozyme evidence. Systematic Botany 17: 640-648.
30. _, AND D. M. HUNT. 1991. Hybridization in North American Asclepias II. Flavonoid evidence. Systematic Botany 16: 132-142.